Skip to content CW7 series air circuit breaker(hereinafter called ACB) is suitable for the circuit of AC 50Hz/60Hz with rated service voltage 400V, 690V and rated service current between 200A -6300A. It is mainly used to distribute electric energy and protect circuits and electric equipment against over-load, under-voltage, short-circuit and single phase earthing fault.
With intelligent and self Active protection functions, the breaker can improve the reliability of power supply, and avoid unnecessary power failure. The breaker is applicable for power stations, factories, mines(for 690V) and modern high-buildings, especially for the distribution system of intelligentized building.
Standard: IEC/EN 60947-2
| CW7 | – | 2500A | 3P | Fixed type |
| Model | Rated current in scope of frame size | Number of poles | Installation | |
| ACB | 1600 Type: 200A,400A,630A,800A,1000A,1250A,1600A 2000 Type: 630A,800A,1000A,1250A,1600A,2000A 2500 Type: 630A,800A,1000A,1250A,1600A,2000A,2500A 3200 Type: 2000A,2500A,3200A 4000 Type: 2500A,3200A,4000A 6300 Type: 4000A,5000A,6300A | 3P 4P | Fixed type:horizontal Drawout type：horizontal / vertical (Default horizontal wiring) |
| 3M | □ | □ |
| Intelligent controller | Common use accessory | Optional accessories |
| 2M type: digital display 3M type: LCD display 2H type: communication function, digital display 3H type: communication function, LCD display | Shunt release Undervoltage release Closing electromagnet Motor-driven energy-storage mechanism Auxiliary contact | Mechanical interlock Automatic power transfer system Current transformer connected with neutral load |
| Type | Operating and Installation Conditions |
| Ambient temperature | -5°C~+40°C;the average value within 24h shall not exceed +35°C; L type and M type controller can be used under -40°C~+70°C |
| Altitude | ≤2000m |
| Pollution grade | 3 |
| Safety category | Main circuit and undervoltage tripping coil is IV,other auxiliary and control circuit is III |
| Installation position | Vertically installed, inclination between the mounting plane and the vertical plane should not exceed ±5 |
| Item | Description |
| Number of Poles | 3P, 4P |
| Rated voltage Ue(V) | 400/415, 660/690 |
| Rated insulation voltage Ui(V) | 1000 |
| Rated impulse withstand voltage Uimp(kV) | 12 |
| Rated frequency(Hz) | 50/60 |
Frame size rated current
| Rated current In(A) | 1600 | 2000 | 2500 | 3200 | 4000 | 6300 |
| 200 | ● | |||||
| 400 | ● | |||||
| 630 | ● | ● | ● | |||
| 800 | ● | ● | ● | |||
| 1000 | ● | ● | ● | |||
| 1250 | ● | ● | ● | |||
| 1600 | ● | ● | ● | |||
| 2000 | ● | ● | ● | |||
| 2500 | ● | ● | ● | |||
| 3200 | ● | ● | ||||
| 4000 | ● | ● | ||||
| 5000 | ● | |||||
| 6300 | ● |
Breaking capacity
| Rated current In(A) | 1600 | 2000 | 2500 | 3200 | 4000 | 6300 | |
| Rated ultimate short circuibreaking capacity Icu(kA) | 400/415V | 65 | 80 | 100 | 100 | 120 | 135 |
| 660/690V | 50 | 65 | 70 | 85 | 85 | 100 | |
| Rated service short circuit breaking capacity Ics(kA) | 400/415V | 55 | 65 | 80 | 80 | 100 | 135 |
| 660/690V | 42 | 65 | 70 | 70 | 85 | 100 | |
| Rated short time withstand current Icw.1s(kA) | 400/415V | 50 | 65 | 80 | 80 | 100 | 135 |
| 660/690V | 42 | 65 | 70 | 70 | 85 | 100 | |
| Rated short circuit making and breaking capacity Icm(kA) | 400/415V | 110 | 176 | 220 | 220 | 264 | 297 |
| 660/690V | 77 | 143 | 154 | 154 | 187 | 220 | |
| Electric life | 8000 | 8000 | 8000 | 8000 | 600 | 1500 | |
| Mechanical life(Maintenance) | 30000 | 30000 | 30000 | 20000 | 20000 | 5000 | |
| Mechanical life(Non-maintenance) | 20000 | 15000 | 15000 | 12500 | 10000 | 2500 | |
| Dimension(mm)W×H×L | |||||||
| Drawout type | 3P | 285×345×351 | 375×451×432 | 375×451×432 | 435×486×439 | 435×486×439 | 930×486×439 |
| 4P | 352×345×351 | 470×451×432 | 470×451×432 | 550×486×439 | 550×486×439 | / | |
| Fixed type | 3P | 254×251×320 | 362×362×395 | 362×362×395 | 426×378×395 | 426×378×395 | / |
| 4P | 324×251×320 | 457×362×395 | 457×362×395 | 537×378×395 | 537×378×395 | / | |
Note: 6300A only has 3P drawout type.
